Just acquired a nice Century Graphic with a 23 roll film back. It did not come with a Graflok focusing panel. Are these available anywhere? It is not something I would use often but would like to have.

You raise a sore point with me, and that is the frequent selling of "our" cameras, especially the Century it seems, with a rollfilm back but no focussing panel. If you then look elsewhere on the auction site, chances are you'll see the same seller offering the panel as a separate listing. To me, this borders on the dishonest, as the camera is practically useless as a precision instrument without it. So look on the site and/or google up the term. This item does turn up fairly often.